Gold-separator.



No; 754,657. `1 A131111T111 MAR. 15, 1904.

A. C. LA BUD 1.111. BARTON.

4GrOLD SEPARATOR.

APPLIGATIoN FILED JAN. z2. 1902.

No MODEL.' z SHEETS-SHEET 2.

-ff-Q- v @ff/wam u UNITED STATES Patented March 15, 1904.

PATENT EEICE.

AUGUST O. LABUD AND HENRY JOHN BARTON, OF OAKBAR, CALIFORNIA.

GOLD-SEPARATOR.

SPECIFICATION forming part of Letters Patent NO. 754,657, dated March15, 1904.

Application filed January 22, 1902. Serial No. 90,780l (No model.)

To all whom t may concern,.-

Be it known that we, AUGUST O. LA BUD and HENRY JOHN BARTON, citizens ofthe United States, residing at Oakbar, in the county of Siskiyou andState of Cali fornia, have invented certain new and useful Improvementsin Gold-Separators; and we do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention has relation to gold-separators; and it consists in thenovel construction and combination of parts, all as hereinafterdescribed, and pointed out in the appended claim.

Figure l is a side elevation of our separator. Fig. 2 is a plan view ofthe same. Fig. 3 is l a cross-section through the separator on a linewith the sluice-box, and Figs. 4 and 5 are detail views of the riflles.

Referring to the drawings, the letter A designates the chute upon whichthe dirt or gravel is dumped and which leads to the perforatedshaking-table or screen B, suspended by pivoted hangers band vibratedlongitudinally by eccentric-rod-'and-strap connection with the shaft 0,driven by suitablepower. Below the swinging screen, the perforations ofwhich are coarse, having a diameter of one and one-half inches, is thehopper O for the separated from its neighbors of the same set by a spaceof one inch. The riifles of the lower set, which are loaded withQuicksilver, are separated from each other by a space of threequartersof an inch. The peculiar form of these riiiies has special advantagesfor increasing commotion in the water, which will prevent packing of thegravel in the riiiies. The first boxes of these riflies are set upon ahigher grade than the lower boxes, facilitating the extrication of theunderflow. The sluice-box leads into an undercurrent G, which isprovided with the latest devices for saving gold. The vibratory screendischarges at its lower end into a self-dumping rock-car H, such carbeing for the purpose of transferring thenine feet for the sluice-boxand a twelve-foot dump for the rock-car, besides the fall of thesluice-box. The dirt is graded at once as it passes over the vibratoryscreen to a sizeof one and one-half inches in diameter and is againgraded twice over to sizes of one inch and three-quarters of an inch indiameter by the riHies in the sluice-box.

Having thus described our invention, what we claimA as new, and desireto secure by Letters Patent, is-

In a gold-separator, the combination of a sluice-box, and a plurality ofsets of inverted- L-form rifiles therein, the lower set of riflies lyingon the bottom of the sluice-box and slightly spaced from each other, andthe upper set directly overlying said lower set and having its riftlesmore widely spaced from each other than those of the lower set,substantially as specified.

A In testimony whereof we aiix our signatures in presence of twowitnesses. p AUGUST C. LA BUD.

HENRY JOHN BARTON. Witnesses:

' H. B. WARREN, -HUGH FosTER.

